PMAa specialtune played as a signal to wakesoldiers in the morning, or the time at which it is played 〔军队的〕起床号;吹起床号的时间
Examples from the Corpus
reveille• Although reveille had been at 0400 hours, the landing would not be made until first light at 0850.• At 4 am the klaxon for reveille sounded, and half an hour later the breakfastgong.• The first vehiclepatrols were out at 0600 hours, so reveille was at 0430 hours.• Their feet are an awfuldream of bunions - but the buffalo's brazilnut bugle-horns can never sound reveille.• The cadets wake to reveille at 6:55 a.m.
Originreveille
(1600-1700)Frenchréveillez!“wake up!”, from réveiller“to wake up”, from Latinvigilare“to stay awake”